Relay.



0, 0. DENNIS.

1 RELAY. Arrmoflion 11.31 D110. 11,1906.

Patented Aug. 2, 1910.

OLIVER C. DENNIS, OF CHICAGO, ILLINOIS.

RELAY.

Specification of Letters Patent.

Patented Aug. 2, 1910.

Original application filed October 29, 1904, Serial No. 230,475. Dividedand this application filed December 11, 1905. Serial No. 291,273.

To all whom it may comem:

Be it known that I, OLIVER C. DErI'N-IS, a resident ofChicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Relays, of which the following is a full, clear,and exact description.

The invention relates to relays and designs to provide an improved relaywhich is simple, and compact, and which is susceptible of performing aplurality of functions, 6. g. the alternative operation of a pluralityof switches.

With these objects in view the invent-ion consists in the several novelfeatures hereinafter set forth and more particularly defined by claim atthe conclusion hereof.

This application is a division of the subject-ma'tter set forth inapplication filed by me October 29, 1904;, Serial No, 230,4:75.

In the drawings: Figure 1 is aperspective of the improved relay. Fig. 2is a central longitudinal section, the armature being shown in normalposition. vFig. 8 is a similar view showing the armature .in another ofits posi ions.

A denotes a solenoidal relay comprising a helix B and a helix C, withinwhich is slidably guided a core D, a jacket E and caps b and 0 and acentral disk or pole-piece e. Insulating ends 5 and c are respectively 1arranged at the outer ends of helices B and '9! ent portion adapted tobe shifted by, and to C. The caps,.core, disk and jacket are made .ofiron to provide paths for the magnetic flux resulting from both helices.Core D is guided in tube at and'is adapted to operate a switch G at oneend of the relay and a switch H at the other end of the relay. Switch Gcomprises members g, g, g and Members-g and g each have a resilishift,the armature. Switch H comprises membersit and It which are normally incontact. Membern has a resilient portion adapted to be shifted by andshift the core.

The core is provided with studs a" of insu- .ltttlll material wherebythe resilientswitch memoers' are respectively operated. The core isnormally centralized by the resilient switclrmembers. One end or portionD of the core D serves as an armature for the helix. l3 and the otherend or portion D ;serves as an armature forthefhelix C, and thus thecor; serves as armatures forthcjhelices respectively. The helices;B.,and. C

are diflerentially wound or connected so that passage of current throughone coil Wlll operate the armature core in one direction whileenergization of the other coil will operate it in the oppositedirection. This differential operation is obtained by passage of currentin opposite direction or by reversal. oi the helix windings, as wellunderstood in the art.

The operation of the relay will be as follows: When the coil C isenergized by passage of current therethrough, armature D and the corewill be shifted outwardly in direction to operate switch H, the magneticpath resulting therefrom will be through armature D disk 6, jacket E andcap 0 as indicated in Fig. 2, thus effecting outward movement or", coreD in proper direction to operate switch H. lVhen said helix isdoenergizcd, resilient switch-member It will restore the armature to itsnormal central-- ized position. \Vhen helix B is energized, the magneticpath will be through armature D, disk 0, j acket E and cap 7), asindicated in Fig. 2, thus effecting outward movementof core D in properdirection to operate switch G. lVhen said helix is deenergized,resilient ends of switch-members g and 9 will restore the core to itsnormal centralized position.

The improved relay can be used to advantage in many places whereelectrical switches are to be operated, e. g. as a combined lineswitchand cut-out switch in a telephone system.

The invention is not to be understood as restricted to the detailsdescribed, but may be modified without departing from the spirit-andscope of the invention.

-Having thus described the invcntion,what

H I claim as new and desire to secure by Letters Patent, is:

1. In a selective solenoidal relay, the combination of an armature-core,a pair of armaturmoperatod switch-contacts, a pair of helicestorindependently operating the contacts respectively, and for holding theswitches in the positions into which they are operated by the helicesrespectively when the latter are energized, and means for restoring saidcore to its inoperative position independently of the helices.

2. In a selective solenoidal relay the com bination of an armature-core,a pair of arma- ,ture operated switch contacts disposed 9;; FL

the ends of tne relay respectively, a pair of helices for independentlyoperating the contacts respectively and for holding the contacts in thepositions into which they are operated by the helices respectively, whenthe latter are energized, and means for restoring said core to itsinoperative position independently of the helices.

3. In a selective solenoidal relay, the combination of an armaturewcore,sprmg-pressed in one direction, a pair of armature-operatedswitch-contacts disposed at the ends of the relay respectively, a pairof helices for independently operating the contacts respectively and forholding them in the positions in which they are operated by the helicesrespectively, and means for restoring said core to its inoperativeposition independently of the helices.

4. In a selective solenoidal relay, the combination of an armature-core,a pair of armature-operated spring-pressed switches mounted at the endsof the relay respectively, a

. pair of helices for independently operating the switches respectivelyand for holding them in the position in which they are operated by thehelices respectively, said core being restored to its inoperativepositionby one of the switches and independently of the helices.

5. In a selective solenoidal relay, thecombination of an armature-core,a pair of armature-operated switch-contacts, a pair of helices forindependently operating the contacts respectively and for holding thecontacts in the, positions into which they are operated by the helicesrespectively, means for restorin said core to its ino erative osit onindependently of the helices, and a jacket inclosing the helices, saidcontacts being disposed at the ends of the helices retacts respectivelyand for holding the con tacts in position into which they are operatedby the helices respectively, means for restoring said core to itsinoperative position independently of the helices, a jacket extendingaround both of the helices, and

I a cap at each end of the jacket, said jacket and said caps forming apart of the magnetic path.

7. In a selective solenoidal relay, the combination of an armature-core,a pair of armature-operated switch-contacts, a air of helices for indeendentlfy 0 crating t e contacts respective y and or iiolding thecontacts in position into which they are operated by the helicesrespectively, means for restoring the core to its inoperative positionindepen I tendlngaround both of the helices, and a cap at each end ofthe jacket, said jacket and said caps forming a art ofthe magnetic path,said contacts being mounted on said caps.

v 8. In a selective solenoidal relay, the combination'of anarmature-core, a pair of arently of the helices, a jacketexmature-operated switch-contacts, a pair of helices around said corefor independently operating the contacts respectively and for holdingthe contacts in position into which they are operated by the helicesrespectively, means for restoring the core to its ino rative positionindependently of the helices, and a common pole-piece between thehelices.

9. In a selective solenoidal relay, the combination of an armature-core,a pair of armature-operated switch-contacts, a pair of helices forindependently operating the contacts respectively and for holding thecontacts in position into which they are oper' ated by the helicesrespectively, means for restoring the core to its inoperative positionindependently of the helices, a jacket around the helices, a commonpole-piece between the helices, and a cap at each end of the jacket,said core, jacket, caps and pole-piece forming a magnetic path.

10. In a selective solenoidal relay, the combination of anarmature-core, a pair of armature-operated switch-contacts, a pair ofhelices for independently operating the switches respectively and forholding the switches in position into which they are operated by thehelices respectively, means for restoring said core to its inoperativeposition independently of the helices, a jacket around the helices, acommon pole-piece between the helices, and a cap at each end of theacket, said core, acket, caps and polepiece forming a magnetic path,said switches beingv mounted on said caps respectively. ()LIVER C.DENNIS. \Vitnesses FRED GERLACH,

LESNE S. RUSSELL.

